coreutils/tests/touch/no-rights

#!/bin/sh
# Make sure touch can update the times on a file that is neither
# readable nor writable.

if test "$VERBOSE" = yes; then
  set -x
  touch --version
fi

DEFAULT_SLEEP_SECONDS=2
SLEEP_SECONDS=${SLEEP_SECONDS=$DEFAULT_SLEEP_SECONDS}

t1=no-rw1
t2=no-rw2
rm -rf $t1 $t2
: > $t1

# Make sure $t2 is two seconds newer than $t1.
echo sleeping for $SLEEP_SECONDS seconds...
sleep $SLEEP_SECONDS
: > $t2
fail=0

set x `ls -t $t1 $t2`
test "$*" = "x $t2 $t1" || fail=1

chmod 0 $t1
touch -d tomorrow -c $t1 || fail=1

set x `ls -t $t1 $t2`
test "$*" = "x $t1 $t2" || fail=1

# Also test the combination of --no-create and -a.
touch -a --no-create $t1 || fail=1

rm -f $t1 $t2

exit $fail